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About product and suppliers:
        Alibaba.com offers 171,609 screw making machine products. About 57% of these are plastic extruders, 2% are thread rolling machines, and 1% are plastic granulators. 

A wide variety of screw making machine options are available to you, such as free samples, paid samples. 

There are 171,554 screw making machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Taiwan, which supply 99%, 1%, and 1% of screw making machine respectively. 

Screw making machine products are most popular in Domestic Market, Mid East, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 39,138 with ISO9001, 19,491 with Other, and 1,039 with ISO14001 certification.